How to Choose the Right Size Storage Unit

By Pauline Callejas In Storage 101 |

When it comes to finding the perfect storage unit, one size does not fit all. Whether you’re downsizing, storing seasonal items, or need a place to keep your belongings during a move, picking the right size unit is key to ensuring your items are stored safely and efficiently—without overpaying for space you don’t need. Here’s a guide to help you figure out the right size storage unit.

1. Take Inventory of What You’re Storing

The first step in choosing a storage unit is figuring out what exactly you’ll be storing. Will you be packing away just a few boxes of holiday decorations, or do you need to store an entire three-bedroom home’s worth of furniture? Make a checklist of your items, categorizing them by size – this will give you a rough idea of how much space you’ll need.

  • Boxes and small items: Ideal for smaller units
  • Furniture: May require larger units or specialized spaces like AC storage
  • Vehicles or large equipment: Will need extra-large units or outdoor storage spaces

2. Understand the Types of Storage Unit Sizes

Some units come in various sizes, typically measured in square feet. Here’s a breakdown of common storage unit sizes and what you can fit in each:

Small Units (5×5 or 5×10)

  • Great for: Small personal items, seasonal decorations, or small furniture.
  • Think of it as: The size of a small walk-in closet.
  • Example items: A few boxes, a small desk, chairs, or an outdoor patio set.

Medium Units (10×10 or 10×15)

  • Great for: Storing the contents of a one- to two-bedroom apartment.
  • Think of it as: Half of a standard one-car garage.
  • Example items: Mattresses, sofas, appliances, and multiple boxes.

Large Units (10×20 or 10×30)

  • Great for: Storing the contents of a multi-bedroom house, including large appliances and furniture.
  • Think of it as: A standard one-car garage or larger.
  • Example items: Large sectionals, pianos, refrigerators, and vehicles.

Vehicle or Outdoor Storage

  • Great for: Boats, RVs, trailers, or cars.
  • Think of it as: Either a large, enclosed garage or a covered parking spot.

3. Factor in Extra Space for Access

While you may be tempted to cram everything into the smallest unit possible, it’s important to leave room for accessing your items. If you’ll need to retrieve items periodically, consider a slightly larger unit to create walkways or space to move boxes around. You’ll save yourself time and effort by not having to rearrange everything every time you visit.

4. Use a Storage Unit Size Guide

We offer a size guide to help you take some of the math out of the equation of your storage experience. We’ve created content of common unit dimensions to get a better idea and visualization of what space will best accommodate all your belongings. It’s an easy way to visualize what will fit into a unit without having to guess.

5. Consult with the Storage Experts

If you’re still unsure, don’t hesitate to reach out to the storage professionals at your facility. At Personal Mini Storage, our friendly team members are happy to help you determine the right size unit based on your specific needs. We can even give you a tour of available units to help you get a sense of the space.

6. Consider Special Features

Do your items require air condition to avoid heat damage? Will you need drive-up access to make unloading easier? Once you’ve chosen a unit size, make sure to inquire about any special features or services you might need to keep your belongings safe.

7. Plan for Future Needs

It’s always a good idea to plan for the future. If you’re expecting to add more items to your storage unit, such as seasonal items or new furniture, it might be worth renting a slightly larger space now. This way, you won’t need to upgrade to a bigger unit later and can avoid the hassle of moving your items again.

Choosing the right size storage unit doesn’t have to be overwhelming. By taking stock of your belongings, using online tools, and consulting with experts, you can find a unit that perfectly fits your needs—without paying for unused space.


At Personal Mini Storage, we’re here to help you every step of the way. Whether you need a small unit for seasonal items or a large space for your entire household, we’ve got you covered! Ready to find your perfect storage unit? Contact us today or visit one of our 48 locations for a personalized tour and consultation.

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